Nut-lock.



E. E. HICKERSON.

NUT LOCK.

APPLLQATION FILED APLH. 19H..

Patented May `21; 1918.

imag@ ELMER E H KERSoN 1o I nut locks and has for its primary object toprovidea simple, practical and effective device for securely locking anut upon a bolt r sans 'naar .aan H nuten E. nrcknnsomor racconta,onto.,

' `inrit-Loes. I

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To all 'whom it may concern.'

Be itknown that I, ELMER E. HICKERSQN,

I a citizen of the -United States, residing at v.li/lcGomb, in thecounty o f Hancock and AState of Ohio, have invented certain new anduseful Improvements in Nut-Locks, of which the following isaspecification, reference being had to the accompanying draw- Thisinvention relates to improvements in against possibility of accidental`loosening or displacement, and which may be manufactured at a minimumcost. lt is another object of the invention to provide a device of theabove character, which is constructed so as to lock the nut to the boltwhen the nut is threaded home,

without necessitatingany alterations whatever in the ordinaryconstruction of'the bolt.

It is a further generalob]ect of the 1n- -ven'tion to provide av nutlocking device which is exceedingly strong and durable, can bev easilyand yquickly applied in practical use, and will not Aonly lock the nutupon the bolt but also prevent turning movement of the bolt within thenut.

With the above and other objects in view, myv invention consists in thenovel features of construction, combinatlon and arrangement of parts tobe hereinafter more fully described, claimed'and illustrated incompanying drawing, in which,

Figure 1 is a perspective view illustrating the preferred embodiment ofthe invention and showing the nut in section;

Fig. 2 is a longitudinal section; Fig. 3 is a section taken on the lineof. Fig. 1; yand Fig. i is a detail'perspective view of the washer. v

' Referring in detail to the drawing, 5 designates the boltwhich may beYof any ordinary'or approved form and includes the shank provided withthreads, indicated at 6.

7 designates the nut which may be of hexagonal, octagonal, or any otherdesired the acpolygonal form, and is provided with the usual threadedbore which is gradually enlarged diametrically or dared at one of its 4formed of resilient sheet steel and is projecting points or spurs 10.

' vvided upon lits' perimeter with al plurality of spaced, radiallydisposed, outwardly pro- Ilhis. plate is provided at the .edge of thebolt receiving Specification of Letters Patent. Patented May 2rl, MMS.,application mea april i1, 1er?. sealan. 151305. I

opening Il'l therein ywith aV yieldable lug. or

extension 12 projecting from one face of the washer. This lug preferablytapers longitudinally and 'is curved transversely, the l .curvature ofvsaid lug being appreciably greater. than the are of the edge of theopeningv 11 fromwhi'ch the lug extends. l

'ln the'operation of the device, after the shank of the bolt 5 has beeninserted through the objects to be fastened together, the

`washer plate '9 is arranged upo'nsaid'bolt and moved inwardlyvto engageoneof its faces with thev object, the lug 12 .of theI washer projectingoutwardly from the other face thereof.` 'The nut 7 is now threadedinwardly upon the bolt shank with the. liaring vor enlarged end 8 ofitsy bore opposed to the washer plate. The ltapering wall 8 of the nutbore engaging upon the outer convex surface of the lug 12, graduallyforces said lug inwardly toward the threads on the bolt shank and tendsto -atten said curved lug and cause the longitudinal edges thereof tobite or cut into the threads on the bolt shank. The teeth or spurs 10 onthe outer edge of the washer plate, which .are normally disposed in theplane of said plate, are then bent angularly over upon the side faces ofthe nut 7 so as to effectually prevent turning movement `of 'the nut onthe bolt relative to the washer plate. Preferably, five of the -nutholding points 10 are provided on the washerplate irrespective of theform of nut employed, and when the nut has beenthreaded tightly againstthe face ofthe plate, said points will be in proper relative positionswith respect tothe `nut faces to be bent over upon the'same.

lt will vthus be seen that the washer plate is automatically andsecurely locked to the bolt 4when the nut is threaded home, and

the only further operation necessary is a very simple one of bending thepoints 10 upon the nut faces. With the nut and washer thus heldtogether, neither can turn upon the bolt shank relative to the other,nor can the bolt shank turn within the bore of the nut owing tothevbiting engagement of theedges of the lug 12 with the bolt threads.llt will, therefore, be appreciated that by means'of the presentinvention,

have materially simplied devicesy of this character, whereby the samemay be manu-v factured at exceedingly small .cost andA used invariousinstances where an easily applied and effective nut lock isdesired.

From. the foregoing description, taken 1n connection with the'accompanying drawing,

the construction, manner of'use and. several i advantages of the deviceWill .be clearly and fully understood. .Tlie 'nut and locking washermay, lof course, be made 1n various sizes 'for application to bolts ofdifferent diameters, andvv it will' also be understood that While I haveherein shown and de scribed the preferred construction. and arrangementof the several parts, the device isl susceptible of considerablemodification therein and I, therefore, reserve the privilege of adoptingall such legitimate changes as may be fairly embodied within the spiritand scope of the invention as claimed.

' Having thus fully describedv my inven' tion, what I desireto claim andsecure by Letters Patent is The herein described nut lock including A incombination with a bolt, a nut having a threaded bore for engagementupon the bolt shank, said bore having a liared unthreaded p portion atone end, a washer plate for engagement4 upon the said bolt provided witha bolt receiving o ening and artapering lug projecting lateraly upon theedge of lsaid opening, said lug being transversely curved 'on a radiusless than the lradius of said vopening' whereby, when the nut'isthreaded home upon 'the bolt and the flared lend of the nut bore bearsupon the convex face of said lug'the latter will be forced inwardlytoward the bolt threads and flattened to cause the longitudinal edges ofthe lug to bite into the threads on the' bolt, said washer plate beingfurtherprovided upon its perimeter -with a plurality of spaced bendableportions adapted to be angularly bentinto engagement With the faces ,ofithe nut-

